### Home > A2C > Chapter 9 > Lesson 9.1.2 > Problem9-46

9-46.

For each equation, find two solutions $0° ≤ θ \lt 360°$, which make the equation true. You should not need a calculator.

1. $\operatorname { sin } \theta = \frac { 1 } { 2 }$

$30° \text{ and } 150°$

1. $\operatorname{tan}θ =\sqrt { 3 }$

$60° \text{ and }?$

1. $\operatorname{cos}θ =\frac { \sqrt { 3 } } { 2 }$

$30° \text{ and }?$

1. $\operatorname { sin } \theta = - \frac { \sqrt { 2 } } { 2 }$

$225° \text{ and } ?$